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Finding the Fourth Proportional to 55,658.64, 83,349.45 and 38,940.45

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Solution

The fourth proportional to 55,658.64, 83,349.45 and 38,940.45 is: 58,313.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,658.64 : 83,349.45 = 38,940.45 : x
  2. Step 2: Convert to fraction form
    55,658.64/83,349.45 = 38,940.45/x
  3. Step 3: Cross multiply
    55,658.64x = 83,349.45 × 38,940.45
  4. Step 4: Simplify right side
    55,658.64x = 3,245,665,090.25
  5. Step 5: Solve for x
    x = 3,245,665,090.25/55,658.64
  6. Step 6: Final answer
    x = 58,313.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.